18x18x1 HVAC, Furnace, AC and Heat Pump Filters

Standard Capacity Extended Surface Pleated Panel Filter Features Upgrade from standard pleated filters MERV 8 and MERV 8...

Multi-Pleat GREEN 13 MERV 13 performance rating in accordance with ASHRAE Test Standard 52.2-2012 Earns LEED points Reduces energy cost Extended...

Multi-Pleat XL11-HC Upgrade from standard pleated filter MERV 11 efficiency Low pressure drop High dust holding capacity Superior Efficiency Th...

Multi-Pleat XL11 MERV 11 Upgrade from standard pleated filters MERV 11 rating Available in standard and high capacity Dual-layered filter media ...

Multi-Pleat XL10-HC Upgrade from standard pleated filter MERV 10 efficiency Low resistance to airflow The Koch Multi-Pleat XL10-HC is a medium ...

Multi-Pleat XL10 MERV 10 Extended Surface Pleated Panel Filters with Mechanical Media MERV 10 rating Available in standard and high capacity Mec...

Multi-Pleat XL8 MERV 8 Extended Surface Pleated Panel Filters with Mechanical Media Upgrade from standard pleated fi...

Disposable Panel Filters for Commercial, Industrial & Residential Use KOCH Disposable Polyester Panel Filters are versatile and suitable for a...

Disposable Panel Filters for Commercial, Industrial & Residential Use KOCH Disposable Fiberglass Panel Filters are versatile and suitable for ...